BIOL-L112 EXAM 3 QUESTIONS
WITH THE LATEST AND
UPDATED SCORE.
As a student in this course, you learn that this particular antibody is
considered "bad" when present at elevated levels. However, there is
an advantage to its presence. What can this antibody do that other
classes of antibodies are unable to do? -- Correct Answer ✔✔ It kills
parasitic worms.
Adjacent nucleotides on a strand of DNA are connected to each other
by a _________________ -- Correct Answer ✔✔ Phosphodiester bond
In what stage of translation does the peptide bond join two amino
acids? -- Correct Answer ✔✔ Elongation
The central dogma of molecular biology describes the flow of
information in eukaryotic gene expression as -- Correct Answer ✔✔
DNA to RNA to Protein
A girl steps on an old board and a nail cuts through her shoes and skin,
causing a slight puncture wound. Which of the following non-specific
defense mechanisms will come to her rescue? -- Correct Answer ✔✔
Inflammation
During transcription -- Correct Answer ✔✔ only one of the two DNA
strands acts as a template
Each DNA nucleotide is made up of -- Correct Answer ✔✔ a five-carbon
sugar, a phosphate group, and one of four nitrogenous bases
, A class of antibodies is able to cross the placenta from the mother to
fetus. This confers immunity to the newborn before it is able to develop
its own immunity. Name the antibody class. -- Correct Answer ✔✔ IgG
Except for the stop codons, the codons in the genetic code specify
which of _______ amino acids to use. -- Correct Answer ✔✔ 20
During the elongation stage of transcription, -- Correct Answer ✔✔ the
transcript grows in the 5' to 3' direction.
RNA nucleotides are added to the transcript.
RNA polymerase unwinds the DNA.
The double helix reforms behind RNA polymerase.
The region in a tRNA that bonds with mRNA during translation is the --
Correct Answer ✔✔ anticodon
Which of the following adds individual nucleotides to the 3' end of an
existing strand to build a new DNA strand during replication? -- Correct
Answer ✔✔ DNA polymerase
Arrange the following three lines of defense from earliest to latest:
1= adaptive immune system
2= physical barriers
3= innate immune systems -- Correct Answer ✔✔ 2,3,1
the portions of a gene that are transcribed but not translates are called
-- Correct Answer ✔✔ introns
precursor-mRNA (pre-mRNA) typically exists -- Correct Answer ✔✔ only
in the nucleus of eukaryotes
Human cells produce perhaps as many as 100,000 different proteins
and yet the human genome has only about 35,000 genes. This is best
explained by -- Correct Answer ✔✔ alternative splicing
All of the following are innate defense mechanisms except:
acid secretions of the stomach
WITH THE LATEST AND
UPDATED SCORE.
As a student in this course, you learn that this particular antibody is
considered "bad" when present at elevated levels. However, there is
an advantage to its presence. What can this antibody do that other
classes of antibodies are unable to do? -- Correct Answer ✔✔ It kills
parasitic worms.
Adjacent nucleotides on a strand of DNA are connected to each other
by a _________________ -- Correct Answer ✔✔ Phosphodiester bond
In what stage of translation does the peptide bond join two amino
acids? -- Correct Answer ✔✔ Elongation
The central dogma of molecular biology describes the flow of
information in eukaryotic gene expression as -- Correct Answer ✔✔
DNA to RNA to Protein
A girl steps on an old board and a nail cuts through her shoes and skin,
causing a slight puncture wound. Which of the following non-specific
defense mechanisms will come to her rescue? -- Correct Answer ✔✔
Inflammation
During transcription -- Correct Answer ✔✔ only one of the two DNA
strands acts as a template
Each DNA nucleotide is made up of -- Correct Answer ✔✔ a five-carbon
sugar, a phosphate group, and one of four nitrogenous bases
, A class of antibodies is able to cross the placenta from the mother to
fetus. This confers immunity to the newborn before it is able to develop
its own immunity. Name the antibody class. -- Correct Answer ✔✔ IgG
Except for the stop codons, the codons in the genetic code specify
which of _______ amino acids to use. -- Correct Answer ✔✔ 20
During the elongation stage of transcription, -- Correct Answer ✔✔ the
transcript grows in the 5' to 3' direction.
RNA nucleotides are added to the transcript.
RNA polymerase unwinds the DNA.
The double helix reforms behind RNA polymerase.
The region in a tRNA that bonds with mRNA during translation is the --
Correct Answer ✔✔ anticodon
Which of the following adds individual nucleotides to the 3' end of an
existing strand to build a new DNA strand during replication? -- Correct
Answer ✔✔ DNA polymerase
Arrange the following three lines of defense from earliest to latest:
1= adaptive immune system
2= physical barriers
3= innate immune systems -- Correct Answer ✔✔ 2,3,1
the portions of a gene that are transcribed but not translates are called
-- Correct Answer ✔✔ introns
precursor-mRNA (pre-mRNA) typically exists -- Correct Answer ✔✔ only
in the nucleus of eukaryotes
Human cells produce perhaps as many as 100,000 different proteins
and yet the human genome has only about 35,000 genes. This is best
explained by -- Correct Answer ✔✔ alternative splicing
All of the following are innate defense mechanisms except:
acid secretions of the stomach
